Treatment of vascular injury
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United States of America Patent
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May 3, 1994
Issued Date -
N/A
app pub date -
Jul 16, 1992
filing date -
Jan 3, 1991
priority date (Note) -
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Abstract
Patients suffering vascular injury as a result of balloon catheterization or the like are treated with medicaments containing conjugates comprising a ligand, such as bFGF (or another FGF polypeptide), and a cytotoxic agent. The cytotoxic agent can be a ribosome-inactivating protein (RIP), such as saporin, which is attached to the ligand through a chemical bond or prepared as a recombinant DNA chimera. The medicament containing the conjugate is administered IV to patients after they have been treated for atherosclerosis in a manner which commonly results in vascular injury, particularly to the intima, and effectively prevents restenosis. The conjugate kills proliferating smooth muscle cells in the lumen of the blood vessels which surprisingly express large numbers of high-affinity bFGF receptors while not inhibiting the growth of endothelial cells.
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